Management of obscure gastrointestinal bleeding
Obscure gastrointestinal bleeding (OGIB) is most commonly defined as acute or chronic blood loss, intermittent or continuous, with iron-deficiency anemia and heme-positive stool. The source of bleeding is still undetected in 3% to 5% of patients even after thorough upper and lower endoscopy. Bleeding is more likely to continue in these patients, and the site of bleeding may be in the small bowel or, less frequently, the biliary tree or the pancreas. In the small bowel, the most frequent cause of bleeding (70–80%) is secondary to single, sporadic or, more rarely, diffuse angiodysplasias. The second-most-common source is primitive or metastatic neoplasias (Table 1).
KeywordsSmall Bowel Islet Cell Tumor Small Bowel Tumor Total Colonoscopy Obscure Gastrointestinal Bleeding
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